Finding the Fourth Proportional to 145,665.68, 200,971.71 and 88,328

Step by Step Solution

1. Step 1: Write the proportion equation
   145,665.68 : 200,971.71 = 88,328 : x
2. Step 2: Convert to fraction form
   145,665.68/200,971.71 = 88,328/x
3. Step 3: Cross multiply
   145,665.68x = 200,971.71 × 88,328
4. Step 4: Simplify right side
   145,665.68x = 17,751,429,200.88
5. Step 5: Solve for x
   x = 17,751,429,200.88/145,665.68
6. Step 6: Final answer
   x = 121,864.18